Siemens SINAMICS Drives — G120, G120C, V20 & MICROMASTER Cross-Reference

Edmundson Industrial sources Siemens SINAMICS variable frequency drives across the current and obsolete lineup — the modular G120, the compact G120C, the basic V20, and the discontinued MICROMASTER drives still running in plants. A SINAMICS G120 is built from two matched parts — a Control Unit (for example a CU240E-2) and a Power Module (for example a PM240-2) — so send both order numbers, or the motor data, and we match the set.

Independent sourcing, not an authorized distributor. We supply Siemens drives as new-surplus, used-tested, and sourced-to-order, with condition disclosed before sale. SINAMICS and MICROMASTER are trademarks of Siemens, used here for reference only.

Current-production Siemens drives we source

Line	Application	Notes
SINAMICS G120	Modular general purpose	Control Unit plus Power Module (CU240/CU250 + PM240-2)
SINAMICS G120C	Compact	All-in-one drive with MICROMASTER 420/440 footprint migration
SINAMICS V20	Basic / micro	Simple machine, pump, and fan duty — replaces SINAMICS G110
SINAMICS G115D	Distributed	Wall- and motor-mount distributed drive
SINAMICS G130 / G150	Chassis / cabinet	Higher-power chassis and cabinet drives

Obsolete and legacy Siemens drives — replacement paths

Cross-references are starting points. The G120 is modular and the MICROMASTER is not, so a migration usually means matching a Control Unit and Power Module to the old single unit — verify against the nameplate. We also source the original drive as surplus.

Legacy drive	Status	Typical current replacement
MICROMASTER 440 (MM440)	Discontinued	SINAMICS G120 / G120C
MICROMASTER 420 (MM420)	Discontinued	SINAMICS G120C / V20
MICROMASTER 430 (MM430)	Discontinued	SINAMICS G120P (pump/fan) / G120
SINAMICS G110	Obsolete	SINAMICS V20
MICROMASTER 411 / older	Obsolete	SINAMICS V20 / G120C

Reading a Siemens SINAMICS order number

Siemens drives use 6SL3 order numbers. A G120 Power Module reads like 6SL3210-1PE… and its Control Unit like 6SL3244-…. Because the G120 is modular, the Control Unit and Power Module each carry their own order number — send both. For MICROMASTER, the 6SE6 number identifies the frame and rating.

How we quote a Siemens drive

Send the Siemens order number(s) — for a G120 send both the Control Unit and Power Module 6SL3 numbers; for a MICROMASTER send the 6SE6 number, or the motor HP and voltage.
We confirm the configuration — voltage class, HP / current, enclosure, and options (I/O, fieldbus, and control).
We quote condition, price, and lead time — new-surplus, used-tested, or sourced-to-order, same-day on most requests.
If the replacement changes the footprint or wiring, our fabrication side supplies adapter plates, sub-panels, and modified enclosures so the new drive mounts where the old one came out.

Condition & sourcing

Every Siemens drive is supplied as new-surplus (unused, from the secondary market), used-tested, or sourced-to-order, with condition disclosed before sale and photos on request. We are an independent surplus and sourcing company, not an authorized distributor.

FAQ

What replaced the Siemens MICROMASTER 440?

Siemens positions the SINAMICS G120 and the compact G120C as the successors to the MICROMASTER 440. We source the G120 and G120C as replacements and also supply MICROMASTER 420 and 440 units as surplus.

Does a SINAMICS G120 come as one part?

No. A G120 is modular — it pairs a Control Unit with a Power Module, each with its own order number. Send both numbers, or the motor horsepower and voltage, and we match a complete set.

Do you carry obsolete Siemens MICROMASTER drives?

Yes. We source discontinued MICROMASTER 420, 430, and 440 drives as new-surplus and used-tested, and we cross-reference them to the current SINAMICS G120 family. Condition is disclosed before sale.

Are you an authorized Siemens distributor?

No. Edmundson Industrial is an independent surplus and sourcing company, not an authorized Siemens distributor. We supply Siemens drives as new-surplus, used-tested, and sourced-to-order with condition disclosed before sale.

Request a Quote

or send the drive catalog number or motor HP/voltage to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Same-day response on most requests.

Siemens SINAMICS Variable Frequency Drives